diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 32ac6588bfd..928566934bf 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "8.0.0"
+  ".": "9.0.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbe1c7ee290..ca2e23a10d0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,129 @@
 # Changelog
 
+## [9.0.0](https://github.com/google/blockly/compare/blockly-v8.0.0...blockly-v9.0.0) (2022-10-25)
+
+
+### ⚠ BREAKING CHANGES
+
+* Update deprecations for the new release. (#6470)
+* remove unused functions in style.ts (#6386)
+* Removed backwards compatibility for getDeveloperVars(). (#6385)
+* remove checks for IE and EdgeHTML in core (#6336)
+* allow blocks to receive their own delete events (#6337)
+* **build:** compile to ES2015 instead of ES5 (#6335)
+* Move backwards-compatibility hacks to main.js (#6260)
+* Remove remaining use of `goog.module.declareLegacyNamespace`. (#6254)
+* properly add the removal of utils.global to the renamings file. (#6204)
+* fix or silence type errors (#6105)
+
+### Features
+
+* add basic observable implementations of procedure interfaces ([#6489](https://github.com/google/blockly/issues/6489)) ([a7247af](https://github.com/google/blockly/commit/a7247af7c3e2a32b037079d01a5a01524c79b0db))
+* add interface definitions for procedure stuff ([#6488](https://github.com/google/blockly/issues/6488)) ([1162a66](https://github.com/google/blockly/commit/1162a660a0cfe9ff2acdbed5ee66246d3bd5beb2))
+* Add margin around zoomToFit ([#6042](https://github.com/google/blockly/issues/6042)) ([a202558](https://github.com/google/blockly/commit/a202558950ce9b06825447ec79bbe9960f451715))
+* allow blocks to receive their own delete events ([#6337](https://github.com/google/blockly/issues/6337)) ([e9920a5](https://github.com/google/blockly/commit/e9920a54e0b55fc654156b3765eb5a545d1804ab))
+* **build:** Support TypeScript in `core/` ([#6220](https://github.com/google/blockly/issues/6220)) ([4070ffc](https://github.com/google/blockly/commit/4070ffc419baca9907c671a9190ce93b2e5e3b63))
+* creates a new way to add shortcut key mappings ([#6122](https://github.com/google/blockly/issues/6122)) ([adb5ad1](https://github.com/google/blockly/commit/adb5ad1f3f350db5ae56404408b402376f1d94e5))
+* make isMutator public ([#6316](https://github.com/google/blockly/issues/6316)) ([8f4b49a](https://github.com/google/blockly/commit/8f4b49a7717a1ba20edad0a446d122ada7fbaa82))
+* return element from menu.render ([#6426](https://github.com/google/blockly/issues/6426)) ([e3fa43d](https://github.com/google/blockly/commit/e3fa43d8612566b9e7390b622198d5ee1423f069))
+* updates accessors for getMainWorkspace and getSelected ([#6313](https://github.com/google/blockly/issues/6313)) ([fd127f6](https://github.com/google/blockly/commit/fd127f6b6093b8547a7ba703c44c917624f078da))
+
+
+### Bug Fixes
+
+* `//` isn't a legal comment in CSS ([#6467](https://github.com/google/blockly/issues/6467)) ([84f6dfe](https://github.com/google/blockly/commit/84f6dfef4fe9b0c6a89794f2b97c0cfa7c4b411d))
+* add compose and decompose to block ([#6102](https://github.com/google/blockly/issues/6102)) ([619ee66](https://github.com/google/blockly/commit/619ee66b23967b26b5a25225a640be7915a741c7))
+* add timeouts to delay expensive mutation operations ([#6149](https://github.com/google/blockly/issues/6149)) ([91b570a](https://github.com/google/blockly/commit/91b570ace55d610a63d7e5a3f30b6fc0dfc56630))
+* adding and removing css classes that contained spaces ([#6455](https://github.com/google/blockly/issues/6455)) ([8530e6d](https://github.com/google/blockly/commit/8530e6d537e88c1f7b6b66d588edf5f23256e59e))
+* **build:** Fix sourcemaps ([#6352](https://github.com/google/blockly/issues/6352)) ([e10bf99](https://github.com/google/blockly/commit/e10bf9993680fb634d81704c9f324186f28e8304))
+* **build:** Have prepare task signal async completion ([#6356](https://github.com/google/blockly/issues/6356)) ([079699b](https://github.com/google/blockly/commit/079699baff64a4212627cd7aeed019aefe54cb9e))
+* bump version to 8.0.2 ([5620515](https://github.com/google/blockly/commit/5620515ad6a3fe361e1c85ca699a507f6f743902))
+* Check for empty array in thrasos.RenderInfo.addElemSpacing_ ([#6211](https://github.com/google/blockly/issues/6211)) ([16b5ccd](https://github.com/google/blockly/commit/16b5ccd2eaed64ddf6da170b4398e79ef1ac3120))
+* checkin built files ([f21b9db](https://github.com/google/blockly/commit/f21b9dbbf9edf07dad3f7a8c3a4e07b8d6a27985))
+* component id should be on the prototype ([#6104](https://github.com/google/blockly/issues/6104)) ([172a8ce](https://github.com/google/blockly/commit/172a8ce2127e3e945e2243c765b261e382691580))
+* Connections can be highlighted multiple times ([#6502](https://github.com/google/blockly/issues/6502)) ([581e8ac](https://github.com/google/blockly/commit/581e8acf4bba46ddcdd5f9f4eb19021396815d1e))
+* context menu not working ([#6399](https://github.com/google/blockly/issues/6399)) ([79051a6](https://github.com/google/blockly/commit/79051a69dbd622500c32e649bfd0e93da5d7185a))
+* Deep copy options used by dropdown fields ([#6425](https://github.com/google/blockly/issues/6425)) ([05b221b](https://github.com/google/blockly/commit/05b221b1d619e6bb9c5abb1f432284dc1246bcd9))
+* deprecate functions in object.ts ([#6387](https://github.com/google/blockly/issues/6387)) ([9775b51](https://github.com/google/blockly/commit/9775b5138b40048785a590553176db007c9369e1))
+* disposing of a workspace that has overwritten shadows ([#6424](https://github.com/google/blockly/issues/6424)) ([f2e408b](https://github.com/google/blockly/commit/f2e408b6fa6178b248729f5fb917195680eaf588))
+* Don't warn if field is acually 0 width ([#6558](https://github.com/google/blockly/issues/6558)) ([321f619](https://github.com/google/blockly/commit/321f619e28f24d644ca11a503ba25ba112d5aefc))
+* dragging fails for collapsed blocks with Icons, which have been … ([#6081](https://github.com/google/blockly/issues/6081)) ([f5206d4](https://github.com/google/blockly/commit/f5206d4565b7e68133387287e543b317343239dc))
+* dragging fails for collapsed blocks with Icons, which have been … ([#6081](https://github.com/google/blockly/issues/6081)) ([5240301](https://github.com/google/blockly/commit/5240301611b51801d20d30b61cba69ef7bc08e8f))
+* field defaults not being defined correctly ([#6453](https://github.com/google/blockly/issues/6453)) ([eb1b786](https://github.com/google/blockly/commit/eb1b78663c38d5c4e9f8c074d520ba072391bc36))
+* fix block factory in manual mode ([#6533](https://github.com/google/blockly/issues/6533)) ([a64d6e9](https://github.com/google/blockly/commit/a64d6e91a038f34eb89bac7f0f2bdb5c5472d34e))
+* Fix blocks with mutators. ([#6440](https://github.com/google/blockly/issues/6440)) ([ab03c65](https://github.com/google/blockly/commit/ab03c65f9f6f47b7f76a1cb6fa3dcff70bf14ca5))
+* Fix compilation errors under Closure's strict mode ([#6073](https://github.com/google/blockly/issues/6073)) ([edc2a5c](https://github.com/google/blockly/commit/edc2a5cd0c717e521e8f98b2a3fb6bde061da241))
+* Fix errors in TS declarations with blocks and generators ([#6200](https://github.com/google/blockly/issues/6200)) ([d61f4ca](https://github.com/google/blockly/commit/d61f4cad8dffd29293a907fbb68c33dd5108bd64))
+* fix message loading by removing vestgial dependency ([#6219](https://github.com/google/blockly/issues/6219)) ([c0f81c2](https://github.com/google/blockly/commit/c0f81c200743ff27f9ec86bcf42f80a1ef415bbf))
+* fix message loading from script tags ([#6060](https://github.com/google/blockly/issues/6060)) ([44edbb8](https://github.com/google/blockly/commit/44edbb89c35e4d24144333bf504bf045fa639cce))
+* fix or silence type errors ([#6105](https://github.com/google/blockly/issues/6105)) ([daf78af](https://github.com/google/blockly/commit/daf78af13e5ce7cebefd0e7596f63e8644c324ba))
+* fix pinch to zoom ([#6544](https://github.com/google/blockly/issues/6544)) ([caf91c8](https://github.com/google/blockly/commit/caf91c82a6334c566024c079ea57471c03045942))
+* generator type declarations ([#6412](https://github.com/google/blockly/issues/6412)) ([b2fa356](https://github.com/google/blockly/commit/b2fa356c60fdf397d839fe2097251d65ac70268b))
+* improve types in touch code ([#6099](https://github.com/google/blockly/issues/6099)) ([7c7cfbe](https://github.com/google/blockly/commit/7c7cfbea63b6cc4a0f5d93687ef56c0686a3b1f2))
+* Increases the  speed of deleting blocks ([#6128](https://github.com/google/blockly/issues/6128)) ([71e8356](https://github.com/google/blockly/commit/71e835672703237deb0d1adf2d551cc9b114f443))
+* inject function options dictionary has wrong type definition ([#6231](https://github.com/google/blockly/issues/6231)) ([233cce8](https://github.com/google/blockly/commit/233cce888391974375cde14af13d6023512cdbba))
+* JSON deserialization fails (bug [#6091](https://github.com/google/blockly/issues/6091)) (collapsed procedure call… ([#6103](https://github.com/google/blockly/issues/6103)) ([75a071e](https://github.com/google/blockly/commit/75a071e5a9d5aa12983c2fe0a05c38f1178dae22))
+* JSON deserialization fails (bug [#6091](https://github.com/google/blockly/issues/6091)) (collapsed procedure call… ([#6103](https://github.com/google/blockly/issues/6103)) ([45c36f8](https://github.com/google/blockly/commit/45c36f898202ab850d973d0f4147e15b6782d358))
+* json hooks for lists blocks not needing extra state ([#6177](https://github.com/google/blockly/issues/6177)) ([8b69b61](https://github.com/google/blockly/commit/8b69b61c566d3c96e44761ca19d60cfb467d6a4b))
+* json serialize lists_getIndex with json extraState ([#6136](https://github.com/google/blockly/issues/6136)) ([#6170](https://github.com/google/blockly/issues/6170)) ([0afff23](https://github.com/google/blockly/commit/0afff23d49dcdd29db6a42f9b0e16afeb4b2c43d))
+* loading messages from script tags. ([#6184](https://github.com/google/blockly/issues/6184)) ([188ba98](https://github.com/google/blockly/commit/188ba985ccd413c8b8f969c2fcb43f5af181d507))
+* loading messages from script tags. ([#6184](https://github.com/google/blockly/issues/6184)) ([2a7d6b0](https://github.com/google/blockly/commit/2a7d6b08b585d4a6553565920785b7e8225607f5))
+* Made workspace non-nullable. ([#6300](https://github.com/google/blockly/issues/6300)) ([83a3e74](https://github.com/google/blockly/commit/83a3e74ec95c5c6ff18a575e5b653d6535d78244))
+* make eventUtils throw if event type not registered ([#6381](https://github.com/google/blockly/issues/6381)) ([60bc01a](https://github.com/google/blockly/commit/60bc01acc8fb8cb38b6ca284a53b36137f250696))
+* Make generator types and BlockDefinition less restrictive ([#6185](https://github.com/google/blockly/issues/6185)) ([2ff4f88](https://github.com/google/blockly/commit/2ff4f88f244a4a8670f5c87da1f087a0eaee7a2c))
+* make getSourceBlock nullable again ([#6542](https://github.com/google/blockly/issues/6542)) ([df660af](https://github.com/google/blockly/commit/df660af66ca62dcbe44560c05156160c4d91445b))
+* Make message files work in unpackaged mode, and rebuild msg files ([c3af8de](https://github.com/google/blockly/commit/c3af8deef3d61123dac2f50633bc2bcf01e0b8a6))
+* Make message files work in unpackaged mode, and rebuild msg files ([4b1bb8c](https://github.com/google/blockly/commit/4b1bb8c7b6f540fa2948b072984ad32935f7d1fe))
+* message types being incorrect ([#6414](https://github.com/google/blockly/issues/6414)) ([9c81e75](https://github.com/google/blockly/commit/9c81e7591addff9e0740031086c2c807c098cbff))
+* Modifying size update handling for multiline field in parent block. ([#6461](https://github.com/google/blockly/issues/6461)) ([2a2cbb4](https://github.com/google/blockly/commit/2a2cbb4722c5e12a956c7412d6b5f02402282980))
+* Move backwards-compatibility hacks to main.js ([#6260](https://github.com/google/blockly/issues/6260)) ([aaafbc2](https://github.com/google/blockly/commit/aaafbc2b6f9b4786db58e831919fad59a2a61dd8))
+* move Theme to use a Partial type for BlockStyle ([#6532](https://github.com/google/blockly/issues/6532)) ([ca3b9bd](https://github.com/google/blockly/commit/ca3b9bd079316b6785873a0c51afcc4e9200ef29))
+* mutators disconnecting from children instead of moving them ([#6047](https://github.com/google/blockly/issues/6047)) ([493444c](https://github.com/google/blockly/commit/493444c687eb01d2bd3d8064f23e66d1879c053c))
+* options parser should add trailing slash to 'media' if not present. ([#6263](https://github.com/google/blockly/issues/6263)) ([#6264](https://github.com/google/blockly/issues/6264)) ([bf1a40c](https://github.com/google/blockly/commit/bf1a40c36bad8ada4a69d5ef304a68ed3da2694a))
+* packaging .d.ts files ([#6327](https://github.com/google/blockly/issues/6327)) ([c8dd01a](https://github.com/google/blockly/commit/c8dd01ac87145a6979e93f42738866b5c034331c))
+* parent blocks not bumping neighbours ([#6538](https://github.com/google/blockly/issues/6538)) ([7147813](https://github.com/google/blockly/commit/7147813693b5187d257c72800e9ee6b430d6f938))
+* path object not checking theme props ([#6451](https://github.com/google/blockly/issues/6451)) ([893787b](https://github.com/google/blockly/commit/893787b2853b144956387ab53b206b43b93f5dbc))
+* provide initial values to reduce functions in generated js ([#6178](https://github.com/google/blockly/issues/6178)) ([706c2bf](https://github.com/google/blockly/commit/706c2bfd41088fdca783f2fc1f152453f91fc784))
+* remove calls to removeClass and hasClass ([#6413](https://github.com/google/blockly/issues/6413)) ([5f11f34](https://github.com/google/blockly/commit/5f11f3449f0f855a4467c6312fe25b5cc78c6b9e))
+* remove checks for IE and EdgeHTML in core ([#6336](https://github.com/google/blockly/issues/6336)) ([ffe6d55](https://github.com/google/blockly/commit/ffe6d55d5f6a34a3bb22438804e694995e5d38e3))
+* remove deprecated use of objectUtils from generators ([#6499](https://github.com/google/blockly/issues/6499)) ([224af0a](https://github.com/google/blockly/commit/224af0aa6bb17b3b6e2c7cc7c01daae75ccc7122))
+* Remove float() coercion in Python loops ([#6259](https://github.com/google/blockly/issues/6259)) ([5612e13](https://github.com/google/blockly/commit/5612e13824dae09018b61466141b4b5f380c107f))
+* remove some IE-specific code in dom and style ([#6396](https://github.com/google/blockly/issues/6396)) ([a785ab8](https://github.com/google/blockly/commit/a785ab8d9cceb165e39b1037331e820a7322ce94))
+* remove unused functions in style.ts ([#6386](https://github.com/google/blockly/issues/6386)) ([856e74d](https://github.com/google/blockly/commit/856e74d9cf49fe1e6c6a7813f4ba80713a07a93c))
+* remove unused or obsolete useragent checks ([#6355](https://github.com/google/blockly/issues/6355)) ([aff21b9](https://github.com/google/blockly/commit/aff21b936c8d48fb271cbc087a8e88c82bfedfbf))
+* remove vestigial dependency ([#6219](https://github.com/google/blockly/issues/6219)) ([334956b](https://github.com/google/blockly/commit/334956be9b0ee11f57e38fcac3d55c9237727ead))
+* replace `object.mixin` with `Object.assign` ([#6138](https://github.com/google/blockly/issues/6138)) ([df41c23](https://github.com/google/blockly/commit/df41c234b73982045423b448d0a97f0f7a1ba164))
+* reuse the 'bumpObjects' module in inject.js ([#6121](https://github.com/google/blockly/issues/6121)) ([df8349c](https://github.com/google/blockly/commit/df8349c6709d043c1806ef87b8867dbfc9ee05be))
+* Silence Closure errors when modifying tooltips. ([#6098](https://github.com/google/blockly/issues/6098)) ([29b6b87](https://github.com/google/blockly/commit/29b6b878dc621acd6e11c34aec2e3bce25bb2508))
+* some AnyDuringMigration ([#6430](https://github.com/google/blockly/issues/6430)) ([c2cbed1](https://github.com/google/blockly/commit/c2cbed1146bab6ff546764146125cf2d2d3fe2db))
+* stop using `is3dSupported` ([#6400](https://github.com/google/blockly/issues/6400)) ([55ea12b](https://github.com/google/blockly/commit/55ea12bd2183bef61059d9554e57ff2fb7744681))
+* **tests:** Fix race condition causing flakiness in PHP generator test ([#6213](https://github.com/google/blockly/issues/6213)) ([d7ab815](https://github.com/google/blockly/commit/d7ab81504c2fac2d446fd84db084a77d1203bd18))
+* **tests:** revert change in marker_svg to keep keyboard nav tests working ([#6457](https://github.com/google/blockly/issues/6457)) ([dd0d0f6](https://github.com/google/blockly/commit/dd0d0f6bcffe6939bd1f78cdea871c6b52b9c9ab))
+* theme types ([#6423](https://github.com/google/blockly/issues/6423)) ([abad51f](https://github.com/google/blockly/commit/abad51fdb03f0bde4a0290796f4efc6cdc29cf94))
+* Theme.name does not match registered name ([#6186](https://github.com/google/blockly/issues/6186)) ([#6226](https://github.com/google/blockly/issues/6226)) ([9797943](https://github.com/google/blockly/commit/9797943938583afb6c787ad59d9ae79be73346fe))
+* TS errors on dependent projects with certain tsconfig settings ([#6360](https://github.com/google/blockly/issues/6360)) ([#6361](https://github.com/google/blockly/issues/6361)) ([e58cf77](https://github.com/google/blockly/commit/e58cf77b7f9f4f65e2f5fda72f5ca5a3f888d74b))
+* type error in uneditable bubbles ([#6092](https://github.com/google/blockly/issues/6092)) ([7353c61](https://github.com/google/blockly/commit/7353c61b2b7ee3b5e6b60b061e1414f29f01f596))
+* update a moved function in developer tools so it loads ([#6500](https://github.com/google/blockly/issues/6500)) ([ce3ec78](https://github.com/google/blockly/commit/ce3ec78501a900959c8cc850f0bc5f0642d4e4cc))
+* Update deprecations for the new release. ([#6470](https://github.com/google/blockly/issues/6470)) ([d3447ea](https://github.com/google/blockly/commit/d3447ea5653a21cf0b33cd4cef44ea3168f0ed20))
+* update extraState property in serializer typedefs ([#6057](https://github.com/google/blockly/issues/6057)) ([55cae6e](https://github.com/google/blockly/commit/55cae6ec857a5ead1cd5306095fbbe876d2618af))
+* update package files ([b5c4494](https://github.com/google/blockly/commit/b5c4494e6ad7a3a35ba5147cb69954f6580a678c))
+* update prettify url ([#6459](https://github.com/google/blockly/issues/6459)) ([852e48a](https://github.com/google/blockly/commit/852e48a74bab628d61a1bdfde71ec3a13c2099d4))
+* Update readme and remove travis build badge ([e65835c](https://github.com/google/blockly/commit/e65835ca3240f9c4b29e24863999a32631ecac31))
+* Update typescript definition files for core, blocks, and generators ([#6174](https://github.com/google/blockly/issues/6174)) ([87aa4c0](https://github.com/google/blockly/commit/87aa4c0f625e3a2c99c149c6095f32c20116de7c))
+* update versions ([c137801](https://github.com/google/blockly/commit/c137801d6cdef0cc15dbed28a742c8090b580d6e))
+
+
+### Miscellaneous Chores
+
+* **build:** compile to ES2015 instead of ES5 ([#6335](https://github.com/google/blockly/issues/6335)) ([f032151](https://github.com/google/blockly/commit/f032151cd9c7138fde29d1ca308a714322d751ef))
+* properly add the removal of utils.global to the renamings file. ([#6204](https://github.com/google/blockly/issues/6204)) ([2f734f7](https://github.com/google/blockly/commit/2f734f7f17879296188c542d4a06f01902cde53a))
+
+
+### Code Refactoring
+
+* Remove remaining use of `goog.module.declareLegacyNamespace`. ([#6254](https://github.com/google/blockly/issues/6254)) ([f947b3f](https://github.com/google/blockly/commit/f947b3f4f669660faf46dd82c374e893b7f9acce))
+* Removed backwards compatibility for getDeveloperVars(). ([#6385](https://github.com/google/blockly/issues/6385)) ([3bc42c5](https://github.com/google/blockly/commit/3bc42c5c3f04ae1c1c2a0e1d08c9e3a4a188a8ec))
+
 ## [8.0.0](https://github.com/google/blockly/compare/blockly-v7.20211209.0...blockly-v8.0.0) (2022-03-31)